Update from regex to pcre licensing information
diff --git a/docs/contributing.md b/docs/contributing.md
index 21e42b1..c51ab87 100644
--- a/docs/contributing.md
+++ b/docs/contributing.md
@@ -18,7 +18,7 @@ The bundled dependencies in the `deps` directories are governed
by the following licenses:
- http-parser is licensed under [MIT license](../deps/http-parser/COPYING)
-- regex is governed by [LGPL v2.1+ license](../deps/regex/COPYING)
+- pcre is governed by [BSD license](../deps/pcre/LICENCE)
- winhttp is governed by [LGPL v2.1+](../deps/winhttp/COPYING.LGPL) and [GPL v2 with linking exception](../deps/winhttp/COPYING.GPL)
- zlib is governed by [zlib license](../deps/zlib/COPYING)